major minor  #blocks  name

   8        0 1953514584 sda
   8        1     504832 sda1
   8        2 1953008640 sda2
   8       16 1953514584 sdb
 253        0   52428800 dm-0
 253        1   52428800 dm-1
 253        2   10485760 dm-2
